1. Section 1-4 Measuring Angles and Segments

2. _______________________ What is the measure of segment DC? What is the measure of segment DE? What is the measure of segment BC?

3. Postulate 1-5 The distance between any two points is the absolute value of the difference of the corresponding numbers AB | A – B |

4. Congruent Two segments with the same length are congruent.  Segment BC  DE is it the same as BC = DE

5. Segment Addition Postulate If three points A, B and C are collinear and b is between A and C, then AB + BC = AC

6. Angle Is formed by two rays with the same endpoint

7. Types of Angles Angles are measured in degrees Protractor – measures angles Acute Angle – degree measure between 0 and 90 degrees

8. Types of Angles Right Angle - measures exactly 90 degrees Obtuse Angle – measures between 90 and 180 degrees. Straight Angle – measures exactly 180 degrees

9. Angle Addition Posulate Ex:

10. Pg 30 #32

11. Homework pg 28-29 2-16evens #13, 28, 33-35